Opera 10 has been released as an alpha preview. It showcases a new rendering engine, Presto 2.2, which the company states will improve browsing performance over the previous version by 30 percent, and notably passes Acid3 standards compatibility with a 100 out of 100 score. This article runs it through some benchmarks, checks memory usage, and general browsing experience.

I been using linux opera since i can remember...
opera common problems (exclusive or not):
- memory leaks
- pages that don't function correctly, or not at all
- flash plugin (massive memory consumption, freezes)
(started using flashblocker)

For all the years I have used opera in linux
these problems have yet to be completely fixed...
there are releases that are good and others almost unusable.

And for what it seems the 10 version is continuing on the same path of the previous versions whether it as version bumps or other cool features its basically the same thing and the same problems.

what does ACID3 100/100 mean when I have to use other browsers to make some functionality work in a page.